I just want to announce that we're shipping a fixed revision of the PXFmini. There's no major changes from components side. We have fixed the JST connector pinout. Prior to this revision, the conectors where following DF13 exact pinout.

The major improvement comes when using GPS: the connector integrates serial and I2C bus, so you only need 1 connector to plug your GPS+compass device. This image shows a GPS that integrates GPS + compass in the same connector: